82. ORCHIDACEJS. 315 



jointed to the recurved label. Stigma transverse. Anth. 

 terminal, erect, moveable, shortly and thickly stalked, 2- 

 celled ; cells with imperfect septa. Column long. Germen 

 sessile, twisted. 



Tr. III. ARETHUSEdZ. Anther ultimately free, opercular, 

 deciduous. Pollen in many granules, pulpy or powdery, 

 cohering in 2 stalked masses. Root (in our plant) of fleshy 

 much branched fibres. 



13. EPIPOGIUM. Perianth patent. Lip posterior, erect, large, 

 entire, with a small patent lobe on each side of its base. 

 Spur erect, inflated. Anth. tumid, seated in the lobed top 

 of the column. Stigma transverse, tabular. Germen and 

 stalk not twisted. 



Tr. IV. MALAXIDEjE. Anther terminal, free, usually oper- 

 cular. Pollen cohering in a definite number of granules 

 and at length waxy and confluent ; no stalks. Root fibrous, 

 with or without a superior bulb. 



14. CORALLORHIZA. Perianth converging. Lip with 2 

 prominent longitudinal ridges at the base, 3-lobed ; lateral 

 lobes small ; middle lobe large, slightly emarginate. Spur 

 short or obsolete. Stigma triangular. Rostellum obsolete, 

 but with a large globose appendage. Anth. terminal, 2- 

 celled, opening transversely. Column long. Germen slightly 

 stalked, straight. 



15. MALAXIS. Perianth patent. Lip posterior, erect, entire, 

 similar to the pet., smaller than the sepals. Spur 0. Stigma 

 rhomboidal. Rostellum short, entire, acute. Anth. terminal, 

 continuous with the short column out of the apex of which 

 it appears as if it was excavated, with 2 imperfect cells. 

 Pollen-masses connected at their apex. Germen upon a 

 twisted stalk. 



16. STURMTA. Perianth patent. Lip anterior, erect or ob- 

 lique, entire, dilated, much larger than the sepals. Spur 0. 

 Stigma roundish. Rostellum obsolete, but with an appen- 

 dage consisting of 2 tubercles. Anth. terminal, deciduous, 

 moveable like a lid, with 2 distinct cells. Column long. 

 Germen on a twisted stalk. 



Tr. V. CYPRIPEDIE^E. Intermediate anther barren peta- 

 loid, 2 lateral anthers perfect. 



17- CYPRIPEDIUM. Perianth patent. Lip ventricose, inflated. 

 Column trifid above; the lateral lobes bearing stamens; 

 middle lobe sterile, dilated. Two lower (lateral) sepals com- 

 bined. Germen straight. 



p2 



